1. Solve by substitution:
x + y = 6
2x - 4y = 0
3. Explain what it means for a system of equations to be inconsistent and
how you can tell whether a system is inconsistent using Gaussian elimination.
4. What does it mean for two matrices to be equal?
5. Let A be a 2 x 3 matrix and B be a 2 x 3 matrix.
a) Is it possible to add A and B?
b) Is it possible to do the multiplication AB?
c) Is it possible to do the multiplication BA?
Systems of Linear Equations and Inequalities are investigated.